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LS2 · Stream 2

LS2 Stream 2 Raptor Red

技术规格已验证 Full Face DOT, ECE 22.06 KPA 1550g
CAD ARCHITECTURE BLUEPRINT

Empirical Geometry Profile · Verified Laboratory Cataloging

Quick Facts at a Glance

Category 全盔
Certifications DOT, ECE 22.06
Measured Weight 1550 g
Shell Material KPA
Head Shape Fit Intermediate Oval
Retention System Double D-Ring
SAFETY & CERTIFICATIONS

Verified Safety Snapshot

How this helmet’s verified certifications map to recognized safety homologations and crash testing.

Certified Homologation ✓ ECE 22.05
Rotational Protection Yes (Rotational Mitigation)
SHARP Impact Score 4/5 Stars (SHARP UK)
Retention Mechanism Double D-Ring
Emergency Release System Not specified

Safety standards compliance is based on official manufacturer documentation and public safety laboratory test results. Always verify regional compliance labels on the physical helmet prior to use.

FIT & SIZING

Verified Fit & Sizing Guide

Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.

Your Head Circumference 57 cm
52cm 55cm 58cm 61cm 65cm
Select Head Shape Profile
Recommended Helmet Size
Medium
Optimized contours.
Perfect for standard intermediate head profiles.

专为椭圆形至中等头型设计;配备双密度 EPS 内衬和可调节颊垫,确保稳固贴合。

How to measure

Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.

Design Concept & Background

"L'homme, la sécurité, le sport"

驾驶 LS2 Stream 2 Raptor Red,在道路上占据主导地位。这款全盔专为追求激进风格与不妥协安全性的骑士而设计。这款空气动力学杰作采用流线型的低轮廓设计,能够切开风阻,在高速行驶过程中显著减少阻力并缓解噪音疲劳。鲜艳的红色涂装辅以高级图案,散发出自信与风格,让你在任何车队中脱颖而出。内部的多向通风系统 (MDVS) 确保最佳气流,让你在长途高速行驶中保持凉爽,而先进的 EPS 内衬则提供关键保护。无论你是正在切弯还是在开阔道路上巡航,Stream 2 Raptor 都提供了性能、舒适度和现代美学的完美结合。

LS2 Stream 2 Raptor Red represents an empirical engineering balance between aerodynamic stability and high-absorption cranial protection. Developed under LS2's strict quality assurance standards in Spain, the shell profile is precision-molded to minimize high-velocity turbulent drag while maintaining comprehensive multi-axis impact attenuation.

Within the Full Face segment, ergonomic weight distribution and acoustic insulation are paramount. The chassis geometry is tailored to distribute mass directly above the cervical pivot axis, counteracting high-speed buffeting and minimizing long-distance rider fatigue. Inspect the verified laboratory telemetry and structural analysis below for detailed performance parameters.

Rider Profile & Intended Use

Riding Style 旅行骑行
Helmet Category 全盔
Internal Fit Shape Intermediate Oval
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价格历史与趋势

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Product Concept & Specifications

LS2 (Spain)

Engineering & Biomechanical Safety Analysis

LS2 Stream 2 Raptor 采用高强度 ABS 复合外壳,并辅以碳纤维嵌件,在最大限度减少重量的同时最大化冲击吸收。其空气动力学轮廓具有集成的扰流翼,可减少风力紊流和噪音,确保通过先进的多向通风系统获得稳定的气流。

The LS2 Stream 2 Raptor Red is engineered as a high-integrity Full Face protective system, utilizing a structural shell constructed from KPA. This structural layup is engineered to provide progressive kinetic energy dissipation during impact deceleration, distributing localized shock across outer lamina layers while minimizing deformation transfer into the internal multi-density EPS liner.

Certified to DOT, ECE 22.06 protocols, the architecture is subjected to rigorous linear deceleration limits and oblique impact evaluations to mitigate rotational acceleration forces associated with diffuse axonal injury. For a deeper breakdown of rotational thresholds and impact testing speeds, consult our ECE 22.06 vs DOT vs SNELL engineering benchmark.

Internal geometry follows a Intermediate Oval cranial profile, designed to mitigate focal pressure hot spots across the parietal ridges while maintaining uniform radial clamping pressure along the zygomatic arch. Riders seeking optimal retention stability and break-in guidance should review the cranial aspect ratios and head shape guide as well as our 3D cheek pad density protocol.

Shell composite integrity and acoustic sealing are further optimized through channelized EPS porting and aerodynamic laminar profiling. To learn how shell composites resist stress cracking under prolonged environmental cycling, inspect the composite material comparative matrix.

Fit & Shell Structure

Intermediate Oval Shape

Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.

外壳结构 KPA 外部结构材料
Measured Weight 1550 g (3.42) 中号尺寸的大约重量
Warranty 2 Years 制造商保障期限
主要用途 旅行骑行 优化的骑行姿态

Safety & Certifications

认证 ECE 22.05 经认证的安全标准
Rotational Protection Yes (Rotational Mitigation) 减轻旋转冲击
紧急释放 Not specified 脸颊垫快速拆卸
固定带 Double D-Ring 下巴带扣类型
SHARP 碰撞评级 4/5 SHARP UK 冲击测试成绩已验证

Acoustics & Aerodynamics

噪音水平 未测试 实测高速风噪
通风 7/10 气流性能评级
风洞测试 Not specified 优化的外壳空气动力学
Pinlock 防雾 未包含 防雾镜片内衬

Technology & Convenience

通信设备集成 Generic Speaker Cutouts 对讲机开孔可用性
适合佩戴眼镜 Not specified 内衬眼镜凹槽
面罩系统 Not verified 一体式下拉式遮阳镜
可拆卸内衬 Not verified 可清洗内衬模块

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VEHICLE SYNERGY & ERGONOMICS

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Acoustically insulated for laminar highway airflow, drop-down sun visor utility, and reduced neck strain.

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BMW R 1250 GS

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Data Confidence & Verification Provenance

Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.

Manufacturer Source
LS2 Official Specification
Safety Testing Agency
DOT, ECE 22.06 Homologation Record
Verification Status
✓ Verified Data
Last Audit Date
2026-09-08